The most pressing is in Massachusetts, to fill the Senate seat of John Kerry after he resigned to become secretary of state. Markey will be raising money at the Beverly Hills home of Haim and Cheryl Saban on Sunday, with tickets starting at $1,000 per person. Show biz money has been a significant source of support for Markey, who has many industry connections via his leadership on the House telecommunications subcommittee. But with Gabriel Gomez, Republicans are looking for an upset the June 25 special election, akin to Scott Brown’s defeat of Martha Coakley in the January, 2010 special election to fill a Senate seat after the death of Edward Kennedy.

On Monday, Newark Mayor Cory Booker will be raising money for his Senate race at a young Hollywood event at the London West Hollywood. Booker had been seeking retiring Sen. Frank Lautenberg’s seat, but after Lautenberg’s death on Monday, the race may be taking on a new urgency if Gov. Chris Christie calls a special election this year. There is some confusion as to whether Christie can instead appoint someone to fill the seat until the November, 2014 election. Tickets for the Booker event start at $150, with some “young professional” tickets available for $50.